Frank and Rutledge EVANS

Frank and Rutledge EVANS

I am looking for any information on these two brothers, Frank and Rutledge Evans. When their mother died they went to live with their Aunt Sarah J. Harkness and Uncle Robert Marion Harkness in Frio, TX. around 1880 or so. Their mother died May 1871. Can anyone tell me what happen to them or where they might of gone after 1880? Did they join the Texas Rangers? Any help appreciated. Thank you.